Metal deforming – With means to drive tool – Including cam-actuated support
Patent
1987-01-27
1988-08-09
Jones, David
Metal deforming
With means to drive tool
Including cam-actuated support
100282, 83628, 74 49, 74 55, B21J 918
Patent
active
047619880
ABSTRACT:
A press apparatus having a crank shaft mounted in a crown and having at least one crank portion, and first, second and third roller followers which are fitted on the crank portion to be rotatable about the axis of the crank portion eccentric with the rotational axis of the crank shaft and which are disposed parallel with each other in the axial direction of the crank portion in positions corresponding to the left and right ends and an intermediate section of the crank portion. The apparatus also has a slide post which is disposed in the crown to be slidable in the vertical direction and which is connected at the lower end to a slide, and upper and lower roller pads disposed in the slide post and respectively having a pressure-contact surface which pressingly contacts the first and second roller followers and a pressure-contact surface which pressingly contacts the third roller follower. As the crank shaft rotates, the vertical movement of the slide post is generated by the eccentric rotary motion of the first, second and third roller followers. The radius of this rotary motion is defined by the distance between the rotational axis of the crank shaft and the axis of the crank portion.
REFERENCES:
patent: 2243206 (1941-05-01), Hall
patent: 3064559 (1962-11-01), Treer
patent: 3785194 (1974-01-01), Bradlee
patent: 4355530 (1982-10-01), Chen
patent: 4638731 (1987-01-01), Kato
patent: 4674357 (1987-06-01), Sugawara et al.
Jones David
Sankyo Manufacturing Company Ltd.
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